US3407303A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoelectric apparatus for determining the height of a stack utilizing ambient light
Assignee: Weitmann and Konrad GmbH and Co KG
•
Filing: 1965-11-08
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Granted: 1968-10-22
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Expires: 1985-11-08
Abstract
No abstract record available.
Inventors
- 👤 Konrad Josef
- 👤 Nissler Siegfried
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:43
CPC Classifications
G; G01; G01B; G01B11/00; G01B11/02; G01B11/06; G01B11/0608; B; B65; B65H; B65H1/00; B65H1/08; B65H1/18; B65H31/00; B65H31/04; B65H31/08; B65H31/10; G01F; G01F23/00; G01F23/22; G01F23/28; G01F23/284; G01F23/292; G01F23/2921
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
APPARATUS FOR DETERMINING THE HEIGHT ABOVE A SURFACE OF A STACK IN AMBIENT LIGHT RELATIVE TO FIRST AND SECOND DETERMINED HEIGHTS ABOVE SAID SURFACE, SAID SECOND DETERMINED HEIGHT BEING GREATER THAN SAID FIRST DETERMINED HEIGHT, SAID APPARATUS COMPRISING LIGHT SENSITIVE MEANS POSITIONED IN PROXIMITY WITH SAID FIRST AND SECOND DETERMINED HEIGHTS TO RECEIVE AMBIENT LIGHT ADJACENT SAID STACK WHEREBY AS SAID STACK RISES ABOVE SAID FIRST DETERMINED HEIGHT TOWARD SAID SECOND DETERMINED HEIGHT IT CORRESPONDINGLY PROPORTIONALLY PREVENTS AMBIENT LIGHT FROM REACHING SAID LIGHT SENSITIVE MEANS AND AS SAID STACK DE-
Claim 2
Dependent Claim
90 words
APPARATUS FOR DETERMINING THE HEIGHT ABOVE A SURFACE OF A STACK IN AMBIENT LIGHT RELATIVE TO FIRST AND SECOND DETERMINED HEIGHTS ABOVE SAID SURFACE, SAID SECOND DETERMINED HEIGHT BEING GREATER THAN SAID FIRST DETERMINED HEIGHT, SAID APPARATUS COMPRISING LIGHT SENSITIVE MEANS POSITIONED IN PROXIMITY WITH SAID FIRST AND SECOND DETERMINED HEIGHTS TO RECEIVE AMBIENT LIGHT ADJACENT SAID STACK WHEREBY AS SAID STACK RISES ABOVE SAID FIRST DETERMINED HEIGHT TOWARD SAID SECOND DETERMINED HEIGHT IT CORRESPONDINGLY PROPORTIONALLY PREVENTS AMBIENT LIGHT FROM REACHING SAID LIGHT SENSITIVE MEANS AND AS SAID STACK DE-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-22 | 1972-04-22 | 1972-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-22 | 1976-04-22 | 1976-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-22 | 1980-04-22 | 1980-10-22 | $7700.00 | Window Closed / Lapsed |